Longevity UnmaskedLongevity Unmasked

Question 186 of 433

What about injections for joints: steroids, gel, PRP, and stem cells?

Evidence grade (draft mapping)BLimited or small human studies
Sealed syringe and gauze on a gold tray

The short answer

Steroid injections give short relief. The others are less effective than their marketing suggests.

Steroid injections ease a flare for a few weeks. Repeated often, they may speed cartilage loss.

Hyaluronic acid “gel” injections perform little better than placebo in the best trials.

Platelet-rich plasma (PRP) has mixed results. A well-run trial published in 2021 found it no better than salt water for knee arthritis.

Stem cell injections for joints are unproven and expensive.

Glucosamine and chondroitin do not work better than placebo in rigorous trials.

When a joint is truly worn out and pain limits your life, knee and hip replacements are among the most successful operations in medicine. Go into surgery as strong as you can, and recovery will be faster.

“This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship.” From the book’s medical disclaimer. Full disclaimer

Evidence scope
MIXED HUMAN TRIALS — Joint injections: short-term steroid relief; inconsistent PRP or gel results; stem-cell benefit unproven.Evidence grade (draft mapping)BLimited or small human studiesPart 13, Q186 · Part sources
All of Part 13

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